It's June in Antelope Valley southern California. My weeping willow tree (40 ft) came in beautiful this spring but now all of a sudden the leaves are turning yellow. I've been soaking it 1 or 2 times a week. We have had some pretty heavy winds. Help, it's just now starting to look really healthy since we bought our home 5 yrs ago. Thanks, weeping me
Your tree is most likely needing more water.
Make sure your watering 10 gallons per inch of diameter of the tree trunk.